252049072909 has 2 divisors, whose sum is σ = 252049072910. Its totient is φ = 252049072908.

The previous prime is 252049072879. The next prime is 252049072931. The reversal of 252049072909 is 909270940252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204349202500 + 47699870409 = 452050^2 + 218403^2 .

It is a cyclic number.

It is not a de Polignac number, because 252049072909 - 2⁹ = 252049072397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252049073909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126024536454 + 126024536455.

It is an arithmetic number, because the mean of its divisors is an integer number (126024536455).

Almost surely, 2^252049072909 is an apocalyptic number.

It is an amenable number.

252049072909 is a deficient number, since it is larger than the sum of its proper divisors (1).

252049072909 is an equidigital number, since it uses as much as digits as its factorization.

252049072909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 816480, while the sum is 49.

The spelling of 252049072909 in words is "two hundred fifty-two billion, forty-nine million, seventy-two thousand, nine hundred nine".